I’m working as instructor and I offer downloadable video courses for my students. The files are protected using application named “All.In.One.Protector.” Of course the trial version since this application costs 1500 $ Per year. It works perfect since it prevents screenshots and also allows me to put an expiration date on the files.
My main problem is how to monitor the download of these files and how to prevent students from sharing the download links? Currently I’m using Dropbox, but I’m thinking to move my files to box.net or any other services.
Is there any application that performs the same function such as All.In.One.Protector, but a free or open source?